C11111333133313232233133313331333133313331311233133313331213311   >>    C1111133313331323223313331333133313331333131123313331333121331   <<    C11111333133313232233133313331333133313331311233133313331213313   >>      C11111333133313232233133313331333133313331311233133313331213312   >>